Year 3 KO Reference K

Year 3 KO Reference k

Use the mathematical names for common 2-D and 3-D shapes; sort shapes and describe some of their features.

11. What are the names of these shapes?

23. Tick the shape which is not symmetrical.

Draw a line of symmetry on one of the other shapes.

Key Words

2D shapes, 3D shapes, sort, describe, features, rectangles, squares, circles, triangles, cubes, cuboids, hexagons, pentagons, cylinders, spheres, symmetry, corners, faces, edges, right angles, sides.

Key Questions

What words can you use to describe this shape?

What makes this shape different from the others?

In what ways are these shapes the same/different?

Which shape is the odd-one-out? Why?

Practical Activities

Painting ‘Shape People’ – using as many 2D shapes as possible. Discuss the shapes used.

Making models with 3D shapes. Discuss the shapes used.

Talk about the features of shapes: including vertices/corners, sides/edges, surfaces/faces. It is important that the pupils have the opportunity to hold/feel the 2D and 3D shapes.

Using the whiteboards to draw 2D shapes. Use flashcards of 2D and 3D shapes to revise names/properties.

2D/3D shapes can be placed inside a bag; pupils to describe a shape (by touch), without looking. Can anyone guess what the shape is?

Using cubes to make 3D shapes. The amount of cubes that can be used can be limited; for example, ‘What shapes can you make with four cubes?’

Using geoboards/plasticboards: to make 2D shapes.

Using the school grounds – What shapes can we see?

Tangrams

Hold up a shape … what can you tell me about this shape?

Written Activities

Worksheets to link with the above practical activities.

Worksheet on reflective symmetry in simple 2D shapes and patterns. Are these shapes ……… symmetrical?

Squared paper can be used to draw 2D shapes – squares, rectangles, pentagons etc.

Find the ‘odd one out.’ Provide reasons why the particular shape is the odd one out.

IT

AutoShapes on WORD can be used to produce basic shape pictures (circles, squares, rectangles, triangles etc).

:

Maths Pack 1 : Polygon Paint and Reflect

… select : “Mirror”,“Simple shape sort” and “Street shapes”

BBC Megamaths Shape video available from Library Services.

NNS ITP : ‘Polygon’

Games

Using a programmable toy; turning, moving forwards/backwards.

Shape Dominoes.

Shape Snap.

Home activities/Homework

Activities to develop skills: in 2D and 3D shape – collecting 3D shapes from home (cubes, cuboids etc).

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